Loading...
1/* SPDX-License-Identifier: GPL-2.0 */
2#include <linux/sh_intc.h>
3#include <linux/irq.h>
4#include <linux/irqdomain.h>
5#include <linux/list.h>
6#include <linux/kernel.h>
7#include <linux/types.h>
8#include <linux/radix-tree.h>
9#include <linux/device.h>
10
11#define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \
12 ((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \
13 ((addr_e) << 16) | ((addr_d << 24)))
14
15#define _INTC_SHIFT(h) (h & 0x1f)
16#define _INTC_WIDTH(h) ((h >> 5) & 0xf)
17#define _INTC_FN(h) ((h >> 9) & 0xf)
18#define _INTC_MODE(h) ((h >> 13) & 0x7)
19#define _INTC_ADDR_E(h) ((h >> 16) & 0xff)
20#define _INTC_ADDR_D(h) ((h >> 24) & 0xff)
21
22#ifdef CONFIG_SMP
23#define IS_SMP(x) (x.smp)
24#define INTC_REG(d, x, c) (d->reg[(x)] + ((d->smp[(x)] & 0xff) * c))
25#define SMP_NR(d, x) ((d->smp[(x)] >> 8) ? (d->smp[(x)] >> 8) : 1)
26#else
27#define IS_SMP(x) 0
28#define INTC_REG(d, x, c) (d->reg[(x)])
29#define SMP_NR(d, x) 1
30#endif
31
32struct intc_handle_int {
33 unsigned int irq;
34 unsigned long handle;
35};
36
37struct intc_window {
38 phys_addr_t phys;
39 void __iomem *virt;
40 unsigned long size;
41};
42
43struct intc_map_entry {
44 intc_enum enum_id;
45 struct intc_desc_int *desc;
46};
47
48struct intc_subgroup_entry {
49 unsigned int pirq;
50 intc_enum enum_id;
51 unsigned long handle;
52};
53
54struct intc_desc_int {
55 struct list_head list;
56 struct device dev;
57 struct radix_tree_root tree;
58 raw_spinlock_t lock;
59 unsigned int index;
60 unsigned long *reg;
61#ifdef CONFIG_SMP
62 unsigned long *smp;
63#endif
64 unsigned int nr_reg;
65 struct intc_handle_int *prio;
66 unsigned int nr_prio;
67 struct intc_handle_int *sense;
68 unsigned int nr_sense;
69 struct intc_window *window;
70 unsigned int nr_windows;
71 struct irq_domain *domain;
72 struct irq_chip chip;
73 bool skip_suspend;
74};
75
76
77enum {
78 REG_FN_ERR = 0,
79 REG_FN_TEST_BASE = 1,
80 REG_FN_WRITE_BASE = 5,
81 REG_FN_MODIFY_BASE = 9
82};
83
84enum { MODE_ENABLE_REG = 0, /* Bit(s) set -> interrupt enabled */
85 MODE_MASK_REG, /* Bit(s) set -> interrupt disabled */
86 MODE_DUAL_REG, /* Two registers, set bit to enable / disable */
87 MODE_PRIO_REG, /* Priority value written to enable interrupt */
88 MODE_PCLR_REG, /* Above plus all bits set to disable interrupt */
89};
90
91static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
92{
93 struct irq_chip *chip = irq_get_chip(irq);
94
95 return container_of(chip, struct intc_desc_int, chip);
96}
97
98/*
99 * Grumble.
100 */
101static inline void activate_irq(int irq)
102{
103 irq_modify_status(irq, IRQ_NOREQUEST, IRQ_NOPROBE);
104}
105
106static inline int intc_handle_int_cmp(const void *a, const void *b)
107{
108 const struct intc_handle_int *_a = a;
109 const struct intc_handle_int *_b = b;
110
111 return _a->irq - _b->irq;
112}
113
114/* access.c */
115extern unsigned long
116(*intc_reg_fns[])(unsigned long addr, unsigned long h, unsigned long data);
117
118extern unsigned long
119(*intc_enable_fns[])(unsigned long addr, unsigned long handle,
120 unsigned long (*fn)(unsigned long,
121 unsigned long, unsigned long),
122 unsigned int irq);
123extern unsigned long
124(*intc_disable_fns[])(unsigned long addr, unsigned long handle,
125 unsigned long (*fn)(unsigned long,
126 unsigned long, unsigned long),
127 unsigned int irq);
128extern unsigned long
129(*intc_enable_noprio_fns[])(unsigned long addr, unsigned long handle,
130 unsigned long (*fn)(unsigned long,
131 unsigned long, unsigned long),
132 unsigned int irq);
133
134unsigned long intc_phys_to_virt(struct intc_desc_int *d, unsigned long address);
135unsigned int intc_get_reg(struct intc_desc_int *d, unsigned long address);
136unsigned int intc_set_field_from_handle(unsigned int value,
137 unsigned int field_value,
138 unsigned int handle);
139unsigned long intc_get_field_from_handle(unsigned int value,
140 unsigned int handle);
141
142/* balancing.c */
143#ifdef CONFIG_INTC_BALANCING
144void intc_balancing_enable(unsigned int irq);
145void intc_balancing_disable(unsigned int irq);
146void intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
147 struct intc_desc_int *d, intc_enum id);
148#else
149static inline void intc_balancing_enable(unsigned int irq) { }
150static inline void intc_balancing_disable(unsigned int irq) { }
151static inline void
152intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
153 struct intc_desc_int *d, intc_enum id) { }
154#endif
155
156/* chip.c */
157extern struct irq_chip intc_irq_chip;
158void _intc_enable(struct irq_data *data, unsigned long handle);
159
160/* core.c */
161extern struct list_head intc_list;
162extern raw_spinlock_t intc_big_lock;
163extern struct bus_type intc_subsys;
164
165unsigned int intc_get_dfl_prio_level(void);
166unsigned int intc_get_prio_level(unsigned int irq);
167void intc_set_prio_level(unsigned int irq, unsigned int level);
168
169/* handle.c */
170unsigned int intc_get_mask_handle(struct intc_desc *desc,
171 struct intc_desc_int *d,
172 intc_enum enum_id, int do_grps);
173unsigned int intc_get_prio_handle(struct intc_desc *desc,
174 struct intc_desc_int *d,
175 intc_enum enum_id, int do_grps);
176unsigned int intc_get_sense_handle(struct intc_desc *desc,
177 struct intc_desc_int *d,
178 intc_enum enum_id);
179void intc_set_ack_handle(unsigned int irq, struct intc_desc *desc,
180 struct intc_desc_int *d, intc_enum id);
181unsigned long intc_get_ack_handle(unsigned int irq);
182void intc_enable_disable_enum(struct intc_desc *desc, struct intc_desc_int *d,
183 intc_enum enum_id, int enable);
184
185/* irqdomain.c */
186void intc_irq_domain_init(struct intc_desc_int *d, struct intc_hw_desc *hw);
187
188/* virq.c */
189void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d);
190void intc_irq_xlate_set(unsigned int irq, intc_enum id, struct intc_desc_int *d);
191struct intc_map_entry *intc_irq_xlate_get(unsigned int irq);
1#include <linux/sh_intc.h>
2#include <linux/irq.h>
3#include <linux/irqdomain.h>
4#include <linux/list.h>
5#include <linux/kernel.h>
6#include <linux/types.h>
7#include <linux/radix-tree.h>
8#include <linux/device.h>
9
10#define _INTC_MK(fn, mode, addr_e, addr_d, width, shift) \
11 ((shift) | ((width) << 5) | ((fn) << 9) | ((mode) << 13) | \
12 ((addr_e) << 16) | ((addr_d << 24)))
13
14#define _INTC_SHIFT(h) (h & 0x1f)
15#define _INTC_WIDTH(h) ((h >> 5) & 0xf)
16#define _INTC_FN(h) ((h >> 9) & 0xf)
17#define _INTC_MODE(h) ((h >> 13) & 0x7)
18#define _INTC_ADDR_E(h) ((h >> 16) & 0xff)
19#define _INTC_ADDR_D(h) ((h >> 24) & 0xff)
20
21#ifdef CONFIG_SMP
22#define IS_SMP(x) (x.smp)
23#define INTC_REG(d, x, c) (d->reg[(x)] + ((d->smp[(x)] & 0xff) * c))
24#define SMP_NR(d, x) ((d->smp[(x)] >> 8) ? (d->smp[(x)] >> 8) : 1)
25#else
26#define IS_SMP(x) 0
27#define INTC_REG(d, x, c) (d->reg[(x)])
28#define SMP_NR(d, x) 1
29#endif
30
31struct intc_handle_int {
32 unsigned int irq;
33 unsigned long handle;
34};
35
36struct intc_window {
37 phys_addr_t phys;
38 void __iomem *virt;
39 unsigned long size;
40};
41
42struct intc_map_entry {
43 intc_enum enum_id;
44 struct intc_desc_int *desc;
45};
46
47struct intc_subgroup_entry {
48 unsigned int pirq;
49 intc_enum enum_id;
50 unsigned long handle;
51};
52
53struct intc_desc_int {
54 struct list_head list;
55 struct device dev;
56 struct radix_tree_root tree;
57 raw_spinlock_t lock;
58 unsigned int index;
59 unsigned long *reg;
60#ifdef CONFIG_SMP
61 unsigned long *smp;
62#endif
63 unsigned int nr_reg;
64 struct intc_handle_int *prio;
65 unsigned int nr_prio;
66 struct intc_handle_int *sense;
67 unsigned int nr_sense;
68 struct intc_window *window;
69 unsigned int nr_windows;
70 struct irq_domain *domain;
71 struct irq_chip chip;
72 bool skip_suspend;
73};
74
75
76enum {
77 REG_FN_ERR = 0,
78 REG_FN_TEST_BASE = 1,
79 REG_FN_WRITE_BASE = 5,
80 REG_FN_MODIFY_BASE = 9
81};
82
83enum { MODE_ENABLE_REG = 0, /* Bit(s) set -> interrupt enabled */
84 MODE_MASK_REG, /* Bit(s) set -> interrupt disabled */
85 MODE_DUAL_REG, /* Two registers, set bit to enable / disable */
86 MODE_PRIO_REG, /* Priority value written to enable interrupt */
87 MODE_PCLR_REG, /* Above plus all bits set to disable interrupt */
88};
89
90static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
91{
92 struct irq_chip *chip = irq_get_chip(irq);
93
94 return container_of(chip, struct intc_desc_int, chip);
95}
96
97/*
98 * Grumble.
99 */
100static inline void activate_irq(int irq)
101{
102#ifdef CONFIG_ARM
103 /* ARM requires an extra step to clear IRQ_NOREQUEST, which it
104 * sets on behalf of every irq_chip. Also sets IRQ_NOPROBE.
105 */
106 set_irq_flags(irq, IRQF_VALID);
107#else
108 /* same effect on other architectures */
109 irq_set_noprobe(irq);
110#endif
111}
112
113static inline int intc_handle_int_cmp(const void *a, const void *b)
114{
115 const struct intc_handle_int *_a = a;
116 const struct intc_handle_int *_b = b;
117
118 return _a->irq - _b->irq;
119}
120
121/* access.c */
122extern unsigned long
123(*intc_reg_fns[])(unsigned long addr, unsigned long h, unsigned long data);
124
125extern unsigned long
126(*intc_enable_fns[])(unsigned long addr, unsigned long handle,
127 unsigned long (*fn)(unsigned long,
128 unsigned long, unsigned long),
129 unsigned int irq);
130extern unsigned long
131(*intc_disable_fns[])(unsigned long addr, unsigned long handle,
132 unsigned long (*fn)(unsigned long,
133 unsigned long, unsigned long),
134 unsigned int irq);
135extern unsigned long
136(*intc_enable_noprio_fns[])(unsigned long addr, unsigned long handle,
137 unsigned long (*fn)(unsigned long,
138 unsigned long, unsigned long),
139 unsigned int irq);
140
141unsigned long intc_phys_to_virt(struct intc_desc_int *d, unsigned long address);
142unsigned int intc_get_reg(struct intc_desc_int *d, unsigned long address);
143unsigned int intc_set_field_from_handle(unsigned int value,
144 unsigned int field_value,
145 unsigned int handle);
146unsigned long intc_get_field_from_handle(unsigned int value,
147 unsigned int handle);
148
149/* balancing.c */
150#ifdef CONFIG_INTC_BALANCING
151void intc_balancing_enable(unsigned int irq);
152void intc_balancing_disable(unsigned int irq);
153void intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
154 struct intc_desc_int *d, intc_enum id);
155#else
156static inline void intc_balancing_enable(unsigned int irq) { }
157static inline void intc_balancing_disable(unsigned int irq) { }
158static inline void
159intc_set_dist_handle(unsigned int irq, struct intc_desc *desc,
160 struct intc_desc_int *d, intc_enum id) { }
161#endif
162
163/* chip.c */
164extern struct irq_chip intc_irq_chip;
165void _intc_enable(struct irq_data *data, unsigned long handle);
166
167/* core.c */
168extern struct list_head intc_list;
169extern raw_spinlock_t intc_big_lock;
170extern struct bus_type intc_subsys;
171
172unsigned int intc_get_dfl_prio_level(void);
173unsigned int intc_get_prio_level(unsigned int irq);
174void intc_set_prio_level(unsigned int irq, unsigned int level);
175
176/* handle.c */
177unsigned int intc_get_mask_handle(struct intc_desc *desc,
178 struct intc_desc_int *d,
179 intc_enum enum_id, int do_grps);
180unsigned int intc_get_prio_handle(struct intc_desc *desc,
181 struct intc_desc_int *d,
182 intc_enum enum_id, int do_grps);
183unsigned int intc_get_sense_handle(struct intc_desc *desc,
184 struct intc_desc_int *d,
185 intc_enum enum_id);
186void intc_set_ack_handle(unsigned int irq, struct intc_desc *desc,
187 struct intc_desc_int *d, intc_enum id);
188unsigned long intc_get_ack_handle(unsigned int irq);
189void intc_enable_disable_enum(struct intc_desc *desc, struct intc_desc_int *d,
190 intc_enum enum_id, int enable);
191
192/* irqdomain.c */
193void intc_irq_domain_init(struct intc_desc_int *d, struct intc_hw_desc *hw);
194
195/* virq.c */
196void intc_subgroup_init(struct intc_desc *desc, struct intc_desc_int *d);
197void intc_irq_xlate_set(unsigned int irq, intc_enum id, struct intc_desc_int *d);
198struct intc_map_entry *intc_irq_xlate_get(unsigned int irq);